double-space-generating mutations using simple conservative Leu to Ala replacement of active site residues, we found enzyme variants to efficiently convert larger ketols and bioisosteric ether components with up to seven skeletal atoms, including linear and branched-chain structures. All reactions occurred with full retention of the natural d-threo diastereospecificity. These FSA variants open new avenues
The present invention relates to the use of dihydroxyacetone monoethers as self-tanning substance, to preparations comprising dihydroxyacetone monoethers, and to certain dihydroxyacetone monoethers and to a process for the preparation thereof.
The stereoselective synthesis of (S)- and (R)-3-allyloxy-propane-1,2-diol has been accomplished in four steps from (RS)-3-allyloxy-propane-1,2-diol. Only one intermediate, namely 1-benzoyloxy-3-allyloxy-2-propanone has been prepared by a chemical reaction, that is, pyridinium chlorochromate oxidation of 1-benzoyloxy-3-allyloxypropan-2-ol. All of the remaining reactions (regioselective acylations, asymmetric bioreduction of prochiral ketones, and enzymatic alcoholysis) have been carried out in the presence of biocatalysts. (C) 2012 Elsevier Ltd. All rights reserved.
Die vorliegende Erfindung betrifft die Verwendung von Dihydroxyacetonmonoethern als Selbstbräunungssubstanz, Zubereitungen enthaltend Dihydroxyacetonmonoether, sowie bestimmte Dihydroxyacetonmonoether und ein Verfahren zu deren Herstellung.